Tool driven design The relation between designing and recording design

Activity – Making Copies Study the drawings you received Sculpt the form according to your drawing If you as a sculptor need further information, ask the ‘designer’ of the form If you as a ‘designer’ need to take measurement of your form, check-out your form from the instructor, measure the dimension and put it down in RED on your drawing

Discussion What is the different between this 2 kinds of form exploration? One-off Definition of plan

Making Versus Designing Craftsmen made products one-by-one according to the plans in their own mind Workmen made products in a batch according to a well documented plan made by designers Is design – documentation a one way process? How design-for-manufacturing manifest?

What is Designing? Designing is the generation of a Design description(s) by an agent(s) under the influence of certain constraints, preferences and evaluation knowledge David C. Brown

Discussion How to measure an ink bottle? Will you measure diagonally?

Maxima, Minima and Orthographic Projection Identify major axis in the form Project profiles according to the axis The profiles will likely be local maxima and minima

Tool driven design The shape of artefacts are driven by the limitation of tools that define it We design with orthographic projection in mind to save us time

Machine driven design The shape of artefacts are governed by the tools that shape it The tools are in turn governed by the machines that drive its motion

Milling Machine ( 落地镗铣床 )

Vertical Lathe ( 转塔车床 )

Construction plane driven The way CAD operate mimics traditional practices

Surface Plates

Free-form design True free-form design work on 3D space directly Coordinate system is still needed to interface the free-form with underlying mechanical structure Adapted from MIT OpenCourseWare Design FabricationMIT OpenCourseWare Design Fabrication

End Note How a product is manufacture affect how its form should be defined How a form is defined affect how we shape it CAD and CNC liberate designer from the realm of basic geometries But CAD still affect how we shape a form

End Note The last 4 lessons: Form As Geometries The next 5 lessons: Form As NURBS Surfaces